Syscall in Linux kernel, is an interface to access to kernel basic functions. They are described in section 2 of man pages. The introduction is in man 2 syscall (indirect system call), and the list of functions are described in man 2 syscalls. Update: System Calls in lectures of official Linux kernel documentation including « Linux system calls implementation », « VDSO and virtual syscalls » and « Accessing user space from system calls »
This article follow previous one about RISC-V overall progress and available tools to play with, I will try to make a short article here about Linux syscall usage and the RISC-V assembly case.
Table of Content
* Description section of the man page
* Getting the list of function and how to access them
* Passing parameters
* Function number and registers of return values
* Return values and error code
* Compiling and executing on virtual environment
* Update: Bronzebeard assembler and its baremetal environment for real hardware